Clutch

Details Clutch Clutch

1988-02-17

1990-01-23

Bonck, Rodney H.

192 clutches and power-stop control

Clutches

Axially engaging

192 89B, 192 98, 192 99A, F16D 1356, F16D 2314

Patent

active

048952354

DESCRIPTION:

BRIEF SUMMARY
DESCRIPTION

1. Technical Field
This invention relates to a pull-type clutch which is released by pulling a release bearing toward the transmission side of the clutch by means of a releasing lever connected to a clutch pedal.
2. Background Art
In a conventional pull-type clutch, as shown in FIG. 5, a slantly disposed coil spring 100 is used as a load generating member. The spring force is transmitted to a retainer so that a pressing force on a clutch disc 108 is actuated from the retainer 102 through a lever 104 to a pressure plate 106. (Japanese Examined Patent Application No. 46-15046 based on U.S. patent application No. 549,009, now U.S. Pat. No. 3,394,788).
However, such conventional clutch has a problem in that the spring force of the coil spring 100 causes the pedal depressing force to increase with an increase in a stroke of the clutch pedal. This leads to an increase in the pedal depressing force at the time of releasing of the clutch.
A further problem is that, at the time of high-speed rotation, centrifugal force acting on the coil spring 100 compresses the coil spring 100 to reduce the spring force applied on the pressure plate 106.
The applicants of this application have developed a new clutch which overcome such problems in the pull-type clutch and have filed a patent application on such new clutch U.S. patent application Ser. No. 900,655, now U.S. Pat. No. 4,720.002, dated Jan. 19, 1988, based on Japanese Patent Application No. 60-194158).
In applicants' prior '655 U.S. application, as shown in FIG. 6, a diaphragm spring 110 is used. Such diaphragm spring 100 is held on a clutch cover 116 by means of wire rings 112 and a stud pin 114. A retainer 111 is splined fitted on a sleeve 113 and the clutch cover 116 and the retainer 111 are assembled with studs 117 to rotate as one piece.
However, there is a problem in the clutch of such '655 U.S. application in that the machining costs are high because it is necessary to work a milling machining on the studs 117 of the clutch cover 116.


DISCLOSURE OF THE INVENTION

An object of the invention is to provide a clutch which can reduce the costs of machining in the so-called pull-type clutch.


COMPOSITION OF THE INVENTION

(1) Technical measure
In a clutch carrying out a releasing operation so as to pull a release bearing away from a flywheel by means of a releasing lever connected to a clutch pedal; a clutch disc is spline fitted onto an input shaft of a transmission side, a sleeve is provided on an outer periphery of the input shaft, a release bearing is fastened to a transmission side end of such sleeve, a flange portion is formed on a flywheel side of such sleeve to project toward the outer periphery of the clutch; a load transmitting retainer is provided on the sleeve for fixing a thrust force transmitting member on the flange portion and is pressed onto the flange portion; a clutch cover is connected by the flywheel and covering a pressure plate for pressing the clutch disc; a disc-formed spring member is disposed between the clutch cover and the retainer; a lever for transmitting the spring force of the spring member is disposed between the retainer and the pressure plate; a pin passes through the spring member between the retainer and the clutch cover and the retainer is axially slidable.
(2) Function
Machining work of the retainer and the clutch cover are reduced because the retainer and the clutch cover are engaged by the pin.
There is no need to set a circumferential angle of the retainer because the retainer is pressed to the flange portion of the sleeve placing the thrust force transmitting member between the retainer and the flange.


BRIEF DESCRIPTION OF THE DRAWINGS

FIG. 1 is a vertical sectional view of a clutch according to the present invention.
FIG. 2 is a view of the clutch in FIG. 1 taken in the direction of arrow II, FIG. 1.
FIG. 2a is a perspective view of the lever.
FIG. 3 is a graph showing the relation between the spring force and the distortion of the diaphragm spring.
FIG. 4 is a vertical sectional view of another embodime

REFERENCES:
patent: 2366594 (1945-01-01), Carlson
patent: 3394788 (1968-07-01), Sink
patent: 4234067 (1980-11-01), Billet
patent: 4720002 (1988-01-01), Kitano et al.
patent: 4754860 (1988-07-01), Fukutake et al.

Affiliated with

Also associated with

Rating

Clutch does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Clutch, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Clutch will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-641260